Chaos Laboratory have released a useful plugin for Word Press which allows you to quickly and without any coding knowledge add Hit Tail tracking code to your Word Press blog.
The plugin is called Tailhitter, and it's currently at version 0.4 (Beta), but don't let the low version number and "beta" tagline worry you, as I found the plugin to work without any worries.
The premise is very simple, and it means that with a quick upload and activation of a plug in you can avoid having to dig around in your themes folder trying to find the right place to insert your tracking code.
If you're not comfortable with coding, then this is definitely the easiest way to get Hit Tail working on your site, and as you can see from the TailHitter Options screen shot to the right, it couldn't be simpler.
You can download the plugin from here: